has a slight shutter in engine espeicily 45 mph cleaned injectors replaced plugs and no codes are evadent

What's the mileage and year of the vehicle? Does this shutter you feel occur in overdrive, or with overdrive locked out (generally 3rd gear)? I would drive the vehicle in 3rd gear if it's a four speed, up to 50mph and see if the shutter returns. It might be something as simple as getting the tires balanced. A tire rotation is another way to check as the solid rear axle should wear the tires evenly and moving them to the front will let you know if it is tire related.

The AutoGuide.com network consists of the largest network of enthusiast-owned enthusiast-operated automotive communities.

AutoGuide.com provides the latest car reviews, auto show coverage, new car prices, and automotive news. The AutoGuide network operates more than 100 automotive forums where our users consult peers for shopping information and advice, and share opinions as a community.